Su Wan had a feeling that something was off about Lin Chen but she had no idea that he was thinking of something so severe instead she believed that this big baby of her was just jealous .( a/n : gotta develop her character bro )
It wasn't that she didn't care about Lin Chen but because she never once compared him to his brothers . To her the Lin brothers had both strength and flaws , Lin Chen might believe that he wasn't good at anything but Su Wan never thought him as useless . In her eyes , his brute strength was something incredibly useful .
As a modern person she was a firm believer of everyone was unique and never liked to put others down because of their flaws or things they couldn't do .If she knew that Lin Chen had such dark thoughts she would have definitely sat down with him and had a motivating chat with him but she didn't .